Installing a lamp post
- Thread starter binky
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Help Support Talk Electrician Forum:
it says the 7671 does not cover stuff owned by operator of supply - DNO do notinstall/maintain their own street lighting. all street lighting is either council or privately owned, therefore 7671 applies
even if you have a DNO supply, then 7671 still applies. only part owned by DNO is the cable to the cutout, & the cutout
should be fairly easy with 2 people. even easier if there are 3
and OOI, where are you getting the post from?
Last one I (with one other bloke) did was a 5mtr twin head.
Pre wire the post with cable drops - dig hole - drop post in hole - run swa into (& out if looping to next post) post through duct, I use waste pipe with a bend to take swa up the post to access hatch - use quick set cement (sets in 10 mins) & ballast - terminate swa to switched fuse spur (1 spur per lamp head) & terminate cable drops - test circuit - tower up to mount post cap & the head units.
Job done.
Got pics of the last one I did somewhere.
Pre wire the post with cable drops - dig hole - drop post in hole - run swa into (& out if looping to next post) post through duct, I use waste pipe with a bend to take swa up the post to access hatch - use quick set cement (sets in 10 mins) & ballast - terminate swa to switched fuse spur (1 spur per lamp head) & terminate cable drops - test circuit - tower up to mount post cap & the head units.
Job done.
Got pics of the last one I did somewhere.
fused spur?! should use proper cutouts for them! at least you can fit 2x 16mm SWA's into them
we allways dig hole get a piece of plastic pipe 300dia cut hole in side of pipe75dia drop pipe in hole fit 75mm pipe into side of 300mm pipe then concrete pipe in place when set drop column in pipe level up then fill it up with sand then cap top 50mm with cement
yours benji
yours benji
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[quote name='Andy
definately. no messing round with SWA glands either - jubilee clip and your done
use little lucy type connectors, take up a lot less room than a cut out, but still fused and terminals big enough for sensible cable.
as for earthing,,,,
you dont say what system, but,
in all honesty, a street light is just an outside light, unless you are putting it 2 mile down the lane...!
and, as had been said, you attaching it to a big earth electrode anyway.
as for earthing,,,,
you dont say what system, but,
in all honesty, a street light is just an outside light, unless you are putting it 2 mile down the lane...!
and, as had been said, you attaching it to a big earth electrode anyway.
in that case, then, if the column is conductive then it would have to be treated as an exposed conductive part.
makes a big difference if you treat it that way.
I would bond it to the CPC in that case.
makes a big difference if you treat it that way.
I would bond it to the CPC in that case.
the column is always earthed to the wiring to it. its also common practice to add an earth between door & column
even if you didnt earth the column at the base, it will be earthed at the head via the light fitting (class I, large metallic part bolted to the metallic post)
what would those methods be?
T&E is DI, so you wouldnt need to earth the trunking
had a look back to 16th, and your right about the DI part - if everything is class II, no need to earth the column. had a quick look in 17th but couldnt find anything specific
